Butterfly-valve.



H F. HENNEBOHLE.

BUTTERFLY VALVE. APPLICATION FILEDHJNE 18. 19x4.

1,1 52., l 76, Patented Aug. 31, 1915.

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FRANK HENNEBfiI-ILE, OF CHICAGO, ILLINOIS.

BUTTERFLY-VALVE.

Specification of Letters Patent.

Patented Aug. 31, 1915.

Application filed June 18, 1914. Serial No. 845,808.

To all whom it may concern:

Be it known that I, FRANK I-IENNEBoHLE, citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Butterfly-Valves; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to butterfly valves; that is to say, valves inwhich a single movable vane controls the connection from one entrancepassage to either one of two exit passages, or interchangeably fromeither of two entrance passages to either of two exit passages.

The general objects of my invention are to provide a simple, cheaplymade and easily assembled valve in which an effective closure betweenthe body and vane members may be effected without the use of auxiliarypackings when the vane is in either of its normal operative positions;to provide simple means for machining the seat portions of the valvebody with a minimum of labor; to provide simple means for accuratelymachining the peripheral portions of the vane to the configurationrequired foran effective seating of the said vane when in either of itsoperative positions; and to provide a vane which will be effectivelymaintained in either of its normal operative positions by the pressureof the fluid passing from the entrance to the exit passage of the valve.

Further objects will be apparent from the following specification, andfrom the drawings, in which Figure lis a section through a fourway valveembodying my invention. Fig. -2 is a transverse section through Fig. ,1-along the line 22.

In Fig. 1, my invention is shown as embodied in a valve having a body 1in the shape of a cross presenting bores 2 and 3 disposed atright anglesto each other. One of the said bores, namely bore 2 of the drawings, isequipped substantially tangentially of the intersecting bore 3with-annular rings 41 cast integral with the body 1 and affordingcontractions, which contractions are bored out to form bores of a commoncylindrical surface centered about the axis 5 of the said bore 2.Extending through the intersection between the axis 5 of the bore 2 andthe axis 6 of the cylindrical bore 3 and at right angles to both of saidaxes 1s the axis of a shaft 7 comprising a square shank equipped at oneend with a cylindrical tip 8 and at its other end with a tapered angularportion 9 adapted to receive a suitable handle. The body 1 is equippedon one side with a cylindrical socket formation 9 adapted to form abearing for the end 8 of the shaft and on its opposite side with athreaded boss 10 adapted to receive a bushing 11 carrying a packing box12. The latter preferably consists of a threaded portion equipped with acap 13 and a gasket 14 of leather or other suitable material in terposedbetween the box 11 and the cover 13, the said gasket being preferably soshaped as to be flared toward the inner end of the bushing 11 and intocontact with a cylindrical portion of the shaft 7 interposed between thesquare shank of the latter and the handle-receiving end 9 thereof.Mounted upon the said shaft is a valve member 15 having a bore of squaresection adapted to receive thesaid shank of the shaft and to be keptfrom rotating with respect to the shaft by the said square configurationof the shaft and the bore of the vane. The vane or movable valvemember15 consists essentially of a metal disk of substantiallyelliptical outline, being peripherally bounded by thecylindrical surfaceof which the contractions 4 formportions and by another cylindricalportions of the same cylindrical surface which bounds. the portion ofthe periphery of the vane 15 when the latter is in the position shown inFig. 1.

- .It will be evident from Fig. 1 that since both the contraction ringsand the adjacent portions of the periphery of the vane form partsof thesame cylindrical surface, they will aflord'a substantially tightclosure; and that if the vane is moved to its other operative position,as shown in dotted lines, the similar curvature of the faces thenengaging the contractions or seat portions of the body will likewiseinsure a good seating of the movable valve member.

I Moreovenit will be evident fro1nFig.-1

that with pressure exerted by fluid passing through the valve, as shownby the arrows 17 ,the said pressure will bear upon equal lengths of vanefaces 18 and 19, thereby tending respectively to rotate the vane inopposite directions: However, the said pressure will also be exerted onthe peripheral vane portions 20 disposed substantially at right anglesto the direction in which the fluid 1 enters the. valve and acting upona portion of the vane affording a maximum of. leverage to the saidpressure. Consequently, the pressure upon the saidportion :20 will tendto rotate the vane'in a clockwise direction, 1 thereby maintaining thesame firmly seated in the position shown in. Likewise when the vane isi11 the position shown indotted'lines, therpressure exerted upon theperipheral face portion 21 will tend to rotate the valve in acounter-clockwise direction, thereby maintaining the vane in the otherof its operative' positions.-

'To simplify the manufacturing of the vane so as to insure an easyvandcheap machining of the peripheral portions thereof, I preferablyequipthe vane with a pair of studs 22 and 23 alining respectively with theaxes 5 and 6 of the bores when thevane is in either of its operativepositions. Each of the said studs is equipped at its free end with aconical depression 24 and the vane is likewise provided upon itsopposite side with conical depressions 25 in axial alinement with theaxes of the said studs, so

that the said depressions may be used in centering the vane in either oftwo positions tions of the vane may easily be machined in an ordinarylathe to correspond to the respective cylindrical surfaces required fortheir proper configuration.

It will be obtious that the mounting and packing of the valve stem orshaft may be accomplished in many different ways, but I preferablyprovide an inwardly flexible flared washer 14, shown in Fig. so that anyleakage of fluid into the stufling box 12 will tend to force the saidwasher against the adjacent portion of the shaft, thereby affording apacking which will antomatically adjust itself to the required degree oftightness. It will also be evident that the arrangement of my inventioncould be used with equal facility with a three-way valve, as indicatedby the dotted lines 26, in Fig. 1, and that the various details ofconstruction herein disclosed might be varied in many ways withoutdeparting from the spirit of my invention.

1 claim as my invention 1. A butterfly valve comprising a body memberhaving a pair of intersecting cylindrical bores, a shaft extendingsubstantially through the center of the said intersecting bores, and aVane carried by the shaft and adapted normally to be disposed in eitherof two positions each oblique with respect to both of said intersectingbores: one of the said bores equipped with a pair of annularcontractions disposed at right angles to its axis, and also equippedwith a pair .of contractions disposed diagonally of the said axis andintersecting at the axis of the said shaft, all of the said contractionspresenting inner surfaces in cylindrical alinement with each other: thevane when in each of its said positions being laterally contiguous toone of said diagonal contractions and hearing at its ends respectivelyagainst the two annular contractions.

2. A butterfly valve comprising a body member having a pair of boresdisposed about intersecting axes, a shaft extending through theintersection of said bores, a substantially flat vane carried by theshaft and peripherally bounded by portions of equi diameteredcylindrical surfaces centered about the said axes, and means associatedwith said. vane and disposed respectively axially of the said axes forenabling said vane to be supported respectively axially of either ofsaid axes while machining the said peripheral portions of the vane.

3. A butterfly valve comprising a body member having a pair of boresdisposed about intersecting axes, a shaft extending through theintersection of said bores a sub- In testimony whereof I have signed mystantially flatvane carried by the shaft and name in presence of tWosubscribing Witperipheraily bounded by portions of equi nesses.

diametered cylindrical surfaces centered FRANK HENNEBOHLE. 5 about thesaid axes, and a pair of centering Witnesses:

studs carried by the said vane respectively M. M. BOYLE,

axially of the said axes. G. M. NEVILLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents, Washington, D. C.

